The facility processes up to 1,800 tonnes of incineration bottom ash (ash from burnt rubbish) daily.Metals in the ash can make it unsuitable for paving roads or reclaiming land as the metal content is unstable and can break down or react with oxygen and weaken, said Mr Venkat Patnaik, managing director of Remex Minerals Singapore.

The Tuas facility, which began operations in July this year, has salvaged almost 14,000 tonnes of metals such as copper, aluminium and iron as of end October.

The extracted metal can be recycled, and the remaining ash can be further treated for uses such as land reclamation, brick-making, laying road bases or as a substitute for sand and gravel.

As part of the study, which began in 2013, the agency is looking at how the ash can affect the marine ecosystem. The NEA has engaged researchers from the Nanyang Technological University (NTU) to do a risk-assessment study.

This will include the development of guidelines on how to use such ash for land reclamation. NTU is working with the Tropical Marine Science Institute as part of the project, which is expected to end next year.

WATCH: Take a look inside Singapore's first metal recovery facility. It could help prolong the lifespan of Singapore’s Semakau Landfill, which is currently expected to be filled to capacity by 2035. That's because the facility has been reducing the weight of incineration bottom ash (IBA) by 10 per cent since it opened in July.The ash is what is collected after waste is incinerated at incineration plants. http://bit.ly/1MSFoBT
Posted by 938LIVE on Monday, November 30, 2015

Extracting metals from such ash will also prolong the lifespan of Semakau Landfill, Singapore's only one. The Tuas facility has reduced the weight of incineration ash by 10 per cent.

"The recovery of precious resources from our waste is in line with plans under the Sustainable Singapore Blueprint's goal of Singapore being a zero-waste nation," said NEA chief executive Ronnie Tay in a statement.

"While we explore innovative solutions to manage our waste more efficiently, we must all strive to make the practice of the 3Rs - recycle, reduce and reuse - as a way of life."